Sawing apparatus.



Nu. 689,08 Patented Dec. I7, I90l.

F. LINGUIST.

h SAWING APPARATUS.

{Application filed. Feb. 26, 1901. (No Model.)

2 Sheets-Sheet l.

By 8M No. 689,013. Patented m. l7, I90l.

F. LINQUIST. A SAWING APPARATUS.

(Application filed Feb. 26, 1901.)

2 Sheets-Sheet 2.

(mi Model.)

g a INKENTQR. BY

ATTORNEYS WITNESSES SAWING APPARATUS.

srncrrrcacrion' forming part of Letters Patent No. 689,013, datedDecember 17, 190i.

Application filed February 26,1901. Serial 1%. 48,897. lNomodel.)

To all whom it may concern.-

Be it known that I, FRANK LINQUIST, a citizen of the United States,residing at Brooklyn, in the conntyof Kings and State of New York, haveinvented certain new and useful Improvements in Sawing Apparatus, ofwhich the following is a full and complete specification, such as willenable those skilled in the art to which it appertains to make and usethe same.

This invention relates more particularly to that class ofsawing-machines which are adapted for mounting in operative relation toa log or tree; and it has for its object to provide a simple, cheap,readily-constructed, and perfectly-Operating device of this charactercapable of being worked by a single operator and carried by him from onetree or log to another, capable of being easily attached to and detachedfrom trees or logs of various diameters, and capable of utilizing thefull power of the operator to attain the most effective results.

With these and other ends in View my invention consists, primarily, of aframe provided with manually-operated means for connecting it to a treeor log and constructed with a longitudinally-sliding saw-carrier, asegmental saw provided with operating-levers mounted in mutual relationwhereby to be manipulated both by one operator and respectivelyconnected the first to the sliding saw-support, whereby to hold the sawin constantly-operative relation to the tree or log as it from time totime outs thereinto, and the other connected to the pivot or fulcrum ofthe saw,whereby to manipulate or reciprocate the same.

Secondarily, my invention consists of such a device having connecting orattaching means and a longitudinally-sliding saw-carrier and saw-bladeconnected therewith and provided with a lever or handle connected at oneend. to a pivoted curved arm orcrank-lever, which has its opposite endpivoted to a link connected with the saw-carrier for the purpose ofmanipulating the said saw-carrier readily and effectively with one hand,and a disk mounted upon the pivot or fulcrum of the saw beneaththeframework of the device and having an extended operating leverconnected therewith and which is adapted for Operation in a segment ofmovement parallel to the segment of movement of the saw-blade;

Tertiarily, my invention consists in the improved means I em ploy forconnecting the device to trees or logs of different diameters In theaccompanying drawings, in which like numerals of reference designatecorresponding parts in both views, Figure 1 is a plan view of a deviceembodying my invention, and Fig. 2 is an inverted plan view thereof.

In the practice of my invention I construct a frame composed oflongitudinal side bars 6, connected by cross-bars 7 and 8 at either endthereof, between which cross-bars are secured longitudinal bars orguides 9, which range parallel with each other. Between the longitudinalguides 9 I mount a sliding saw carrier or block 10, the ends or sides ofwhich embrace the said guides, to be thereby retained in position. Inthis carrier or block 10 is mounted a shaft 11, which extends entirelytherethrough. Upon one end of the shaft is mounted atransversely-ranging segmental cross-head 12, rigidly securedltheretoand provided at the opposite ends thereof with clamps 12 through whichare inserted arms 12*, secured therein by set-screws 12". These arms 12are slightly backwardly directed, and to the outer ends thereof '1rigidly secure the rear ends of a segmental or semicircular saw-blade13. To the sliding carrier or block 10 upon the same surface thereof onwhich the cross-head 12 is mounted I pivotally connect, by means of apivot 14,, a link 15, to the Opposite end of which 1 pivot at 16 acurved arm or crank-lever 17, which is pivoted in the longitudinal bar 6at 18. The free end of this arm or crank-lever 17 projects forwardly orin the direction of the saw when the latter is in the retracted positionand has secured or formed integrally thereon a handle 19, projectingsubstantially at right angles thereto. The construction of the link andcrank-lever and the handle and their pivotal relations are such thatwhen the saw is projected to the edge of the crossbar 7,

which, as shown in Fig. 1, contacts with the log or tree, the handle 19projects almost at right angles to the longitudinal bar 6 and reaches aright angle as the saw is further 22, which projects from the centerthereof outwardly to beyond its periphery and lies parallel with itsface. The lever 21 is rigidly secured to the outer end of this radialarm by means of a bolt.

Upon one of the longitudinal bars 6, adjacent to the cross-bar 7, ispivoted a link or lever 24, formed with an integral claw 24 upon whichis superposed a supplemental claw 24, which does not exactly aline withthe main claw 24 andis adapted, together therewith, to engage the log ortree 5. Upon one of the longitudinal bars 9 issecured a U- shaped spring25, having one end thereof outwardly turned and inserted in the link 24to force it normally outwardly. Upon the opposite bar 6 is pivoted at26, somewhat near the center thereof, a lever 27, in one end of which issecured an arm 28, formed with a claw 28 and provided with asupplemental claw 28 secured upon the same similarly to the arrangementof the claws 24: and 24 To the claw 24 I secure at 29 a chain 30,

"which extends along the cross-bar 7 around a pulley 31, which I journalupon the said crossbar 7-. The chain then extends rearwardly toward thepivotal point of the lever '27 and is secured to a loop or eye 32thereon. Upon the crossbar 8 I pivot at 33 a cam-block 34, formed with acurved face, against which the lever 27 bears, and provided with a link35, which surrounds the said lever 27 and enters notches or recesses 36therein. Upon this link is pivotally mounted a handle 37, which operatesas a lever in forcing the link downwardly or forwardly of the saidhandle to cause it to engage in one of the notches orrecesses. 21 rangeboth at one side of the frame, respectively, from the upper and lowerfaces thereof, and the lever 27 ranges longitudinally at the oppositeside, and that all three levers range parallel with the plane of the'saw.

It will be seen that the levers 19and standards for holding it inposition. If the log or tree 5 shown in the drawings be an erect body orin a vertical position, as is customary with trees or piles, the devicewhen connected thereto as shown in Figs. 1 and 2 will projecthorizontally therefrom. If the log be laid upon the ground, then thedevice of course projects vertically therefrom. Either side of thedevice may, moreover, be considered the top or the bottom relatively toits horizontal position; but the right or left is in the verticalposition determinate, since both the handles or levers 19 and 21 projectfrom the same side. In the horizontal position I prefer that the sawshould be on top.

The device is applied to a tree or log by throwing the handle 37 of thelink'35 rearwardl y or away from the saw, thereby removing the link fromthe note n36, and by moving the said link rearwardly the blade is pulledout of the lever 27. lever 27 inwardly or toward the frame of themachine the claws 28 and 28 are projected outwardly and the claws 24.-and 24 will similarly be projected outwardly by the spring 25. The cam34 must first be swung upwardly to prepare for the inward movement ofthe lever 27. The device is then moved toward a tree or log until thefront edge of the-crossbar 7 abuts against the same, whereupon the lever27 is swung outwardly upon 'itspivot 26, thereby moving its forwardendinwardly and taking up the slack of the chain 30 and so tightening it asto pull the claws 24? and 24 against one side of the tree or log 5 andproject the said claws thereinto against the tension of the spring 25.At the same time the movement of the lever forces the claws 28 and 28upon its arm 28 inwardlyinto the 0pposite side of the tree or log 5. Thepivoted cam 34E being then drawndown forces the lever outwardly andbinds it immovably in position and draws the chain tightly to thegreatest possible extent and digs all four of the claws into the woodwith great firmness, and upon drawing down the link and seating it inthe notch 36 the cam is prevented from slipping and the wholedevice isheld in effective position. It is an important advantage of my inventionthat it is thus self-adjustable to a tree or log. It does not requireany standards or supports to hold in on theground. The coordination ofthe parts gives five effective points of engagement of the device withthe tree or log, one being the front of thefranie or cross-bar'7 and theothers being the points of-the four claws 2%, 2t, 28, and 28 and theclaws each grasp the same in two points at either side thereof, so thatthe said tree orlog is clutched and the device bound against the same bypressure on three sides thereof at live points. This enables mysawing-machine to be connected instantlyto any tree or log and to retainitself in connection therewith and makes it a portable machine,'whichcan be carried around by hand. In conjunction with the rest of themechan- By moving the IIO ism it enables my invention to comprise asawing-machine capable of manipulation by one operator. After themachine has been duly applied to the tree or log the operator stands atthe side of the frame from which both handles or levers 19 and 21project. With one hand he grasps the lever 19 and bears against the sameto move the sliding saw-carrierforwardlyin its guides 9,whereby to causethe teeth of the saw to bear against the wood with such a degree ofpressure as may be desired. With the other hand the operator grasps thehandle or lever 21 and operates it back and forth, thereby reciprocatingthe saw in a segmental line of movement back and forth against the treeor log to cut into the same. The operator may brace himself against theone handle 19 anduse the full force of his other arm upon theoperating-handle 21. He may also when he finds the cutting easy bearwith greater force upon the lever 19 to hold the saw more tightlyagainst the tree or log and cut deeper intothe wood and finish the jobmore quickly. When any portion of the Wood is felt by the hand inoperating the handle 21 to be harder to cut and it is found moredifficult to reciprocate the saw, he will bear with less force upon thehandle. Frequently in sawing wood such hard portions will beencountered, and upon the saw-operating hand feeling the teeth of thesaw strike against a knot or other tough portion the other hand of theoperator Will almost instinctively relieve the pressure upon the handle19. The connection of the operating-lever with the central shaft orpivot of the sawblade enables it to work the saw positively andforcibly, and as it projects radially from this cent-er of the saw,beneath one end of the blade and beyond the same, a considerableleverage is acquired, and considerable energy is imparted to the saw ateach stroke of the operating-lever 21. The handle or lever 19 being onone face of the frame and the operating-lever 21 being beneath it on theother face, the said operatingdever 21 clears the hand and arm whichhold the lever 19, and this operating-lever 21 is considerably longerthan the handle or lever 19 and projects appreciably beyond the same,which permits the hand upon the end of the said operating-lever 21 toclear the handle or lever 19 outwardly thereof and also gives aconsiderable leverage. Thus by the arrangement of the saw and of theselevers relatively thereto full force and power are given to the saw, andone operator may grasp both levers and work the saw with perfectfacility and mechanical grace or economy of motion. Moreover, thearrangement of the cross-head 12 and of the rearward projection of thearms 12 gives a large sweep or considerable area of effective contact tothe saw and mounts it rigidly, so as to bear strongly against the work.The arms 12 may be adjusted in the clamps 12 so as to keep the saw-bladeperfectlyand accurately tight, and the sct screws 12 will hold the saidarms in their adjusted position.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. A portable sawing-machine, comprising a frame provided withmanually-operated means for connecting it to a tree or log, alongitudinally-sliding saw-carrier mounted centrally in the said frame,a segmental saw carried by the saw-carrier, and mounted upon a pivotextending through the same, and operating-levers upon the opposite facesof the frame, projecting both from one side of the said frame, the upperlever being connected to the saw-carrier and adapted to slide the sameand the saw toward the work by the pressure of the hand of the operator,and the lower lever having one end connected with the pivot of the sawbeneath the saw-carrier and projecting beyond the upper lever Whereby itmay be manipulated by one hand of the operator, while the upper lever isheld by the other.

2. A portable sawing-machine, comprising a frame provided withmanually-operated means for connecting it to a tree or log and forsustaining it in the connected position,and formed centrally withlongitudinal guides; a saw-carrier sliding in the said guides, asegmental saw connected therewith, a curved arm pivoted on the top ofthe frame and provided at one end with an outwardly-ranging handleprojecting beyond the frame at one side, and the opposite or inner endof the curved arm being pivoted to a link connected to the saw-carrier,rearwardly of the sawblade, a shaft or pivot inserted through the saidsaw-carrier and comprising the fulcrum of the saw, and projectingdownwardly beneath said saw-carrier, a disk rigidly mounted upon thelower end of the said shaft or pivot, an operating-lever secured to thesaid shaft and to the said disk and projecting beneath the frame of themachine, and at the same side as the upper lever and radially withrespect to the saw-blade, whereby a single operator may with one handwork the upper lever to hold the saw-blade ineffective contact with thematter operated upon, with the desired pressure, and may with the otherhand operate the lower lever back and forth to reciprocate the saw-bladewithout interference of the two levers with each other or with the handsof the operator.

3. A portable sawing-machine, comprising a frame composed oflongitudinal bars connected by cross-bars at the front and rear andprovided with longitudinally-arranged manually-operated means forconnecting the frame to a tree or log, the said means being adapted tobe operated from the rear of the frame, and including devices projectingfrom the front of the frame and adapted to bind the said cross-barsagainst the tree or log and maintain the frame in position upon the treeor log without other supports; a longitudinallysliding saw carriermounted centrally in the frame, a segmental saw carried by thesaw-carrier, and having its pivot or fulcrum projected therethrough, andoperating-levers upon the opposite facesof the frame and projectingoutwardly therefrom, the upper lever being connected to the saw-carrierand adapted to slide the same toward the work by the pressure of onehand of the ,operator and the lower lever having one end connected withthe pivot ,of the saw beneath the sayvecarrier and adapted to bemanipulated by-the other handiof the operator while he is holding orpressing the upper lever.

4 A portable sawing-machine, comprising aframe composed of longitudinalbars connected-byicross-bars at front and rear and provided withlongitudinally-arranged inanua'lly-operated means for connecting theframeto a tree or log, the said means being adapted to be operated fromthe rear of the frame and including devices projecting forwardlyfrom thefront cross-bar of the frame and adapted to bind said cross-bar against'thetree or log and maintain .theframe ,inposition upon the tree or logwithoutother supports; a. longitudinallysliding saw carrier mountedcentrally inthe said frame, a segmental saw connected therewith, acurved arm pivoted on the top of theframe and providedatone end with anoutwardly-ranging handle projecting beyond the frame atlone side and theopposite or inner end of the curved arm being pivoted toa linkconnectedto the saw-carrier rearwardly of the sawblade, a shaftor pivot insertedthrough said sawecarrier and comprising the fulcrum of the saw andprojecting downwardly beneath the said saw-carrier, a disk rigidlymounted upon the lower end of the saidshaftor pivot,

an -,operating-lever secured to said shaft and to said disk andprojecting beneath the frame of the machine at the-same side as theupper lever and radially with respect to the saw,-

blade, whereby a single operator maywith onehand work the upper lever tohold the Saw-blade in effective contact with the matter operated upon,withthe desired pressure, andmay with the other hand operate the lowerlever back and forth to reciprocate the saw-blade without interferenceof the two levers witheach other or with the handset the operator of thedevice.

5. A portable sawing-machine, comprising a frameformedoflongitudinalbars connected with cross-bars at front and rear andprovided with longitudinally-arranged manually- I operated meansforconnecting the frameto a treeor log,the said means'being adapted tobeoperated from therear of the frame, and ineluding devicesprojectingforwardly fromthe front cross-bar of the frame, and adapted to I bindsaid cross-bar against thetree or log and maintain the frame in positionuponthetree or logwithout other supports; a longitudinallyslidingsaw-carrier mounted centrally inthe said frame, a lever pivoted upon oneface of the frame and projecting from one side there of and connected tothe saw-carrier to slide the same, a shaft extending through the saidsaw-carrier, a disk mounted upon the lower end of the said shaft, ahandle .or operatinglever secured to the said shaft andto the said diskand projecting from the lower face of the frame beyond the same sidethereof, whereby a single operator may manipulate the Saw-sliding leverwith one hand and the saw-operating lever with the other hand, across-head mounted upon the upper end ,of the shaft and provided at eachend thereof with clamps having set-screws therein, radially-extendingbars mounted in the said clamps and secured therein by said set-screws,and. a segmental saw-blade secured to the outer ends of the said arms.

6, A portable sawing-machine,comprising aflat frame composed oflongitudinal bars,

cross-bars connecting the same ateither end and longitudinal center barsforming guides, a saw-carrier sliding in the said guides, a segmentalsaw mounted in the said carrier, a saw-sliding lever pivoted upon oneface of. the frame and connected with thesaw-carrier and projectingoutwardly from one side of the frame, a second lever secured to thepivotvor fulcrum of the saw'upon the opposite faceof the frame andprojecting from the same side as the first lever and beneath and beyondthe same, whereby a single operator may press against the saw-slidinglever with one hand and reciprocate the operating-lever with the otherhand; a third lever pivoted on the under faceof the frame at theopposite sides thereof and projecting rearwardly, and attaching meansprojecting from the front of the frameand beneath the same andconnectedwith the latter lever and comprising devices adapted to clutcha treeorlogand bind it against the front cross-bar of the frame wherebyto secure and retain the said frame in position thereon Without othersupports.

'7. A portable sawinginachine, comprising a frame, asaw-carrier slidinglongitudinally therein, a segmental saw mounted upon the saidsaw-carrier and having its pivot or fulcrum, projecting therethrough,operating-levers connected respectively withthe saidsawcarrier and withthe said pivot or fulcrum upon opposite faces ofthe frame, andprojecting both from oneside thereof, whereby a single operator may withone hand press against the saw-sliding lever and with the otherreciprocate the operating-lever of the saw; a longitudinallysextendinglever pivoted upon the face of the frame opposite to that swept by thesaw, and extending rearwardly, andswinging laterally with respectthereto andprovided with means mounted upon the frame for binding it ina laterally-adjusted position, a claw mounted upon the working end ofthe lever and projecting beyond the front of the frame and provided witha supplemental claw secured thereto and both adapted to be projectedinto a tree or log by IIO the said lever, a claw pivoted upon theopposite side of the frame and having a similar supplemental clawrigidly secured thereto, a chain secured to the said pivoted claw andranging along the front of the frame, a pulley on said frame aroundwhich the chain passes, the said chain extending along the lever andbeing secured thereto, whereby all four claws are simultaneouslyprojected into log at right angles thereto and provided with clutchingdevices for engaging the said tree or log, a sliding saw-carrierlongitudinally movable in said frame, a segmental saw-blade pivotallymounted in said saw-carrier; and three levers lying parallel with theplane of the frame; one of the levers being pivoted on one face of theframe and projecting from one side thereof and being pivotally connectedto the saw-carrier and adapted to press the same in the direction of thetree or log with one hand of the operator; a second lever projectingfrom the opposite face of the frame on the same side; and beingconnected to the pivot or fulcrum of the saw to operate the same by theother hand of the operator; and the third lever being pivoted upon thesame face of the frame as the operating-lever at the opposite side andconnected to the clutching means for holding the frame to the tree orlog, and being provided with means for holding it in thelaterally-adjusted position.

9. A portable sawing-machine, comprising a frame provided with means forconnecting it to a tree or log and for sustaining it in relationthereto; a saw-carrier longitudinally and freely slidable in the saidframe, a sawblade pivotally mounted in the saw-carrier, a leverconnected with the pivot of the said sawblade for reciprocating thesame, a curved arm pivoted upon the frame and projecting inwardlythereof and pivotally connected by a link to the rear of the carrier,and provided at its forward end with an outwardly-ranging handle orlever, whereby as one hand of the operator reciproeates the saw theother hand grasps the other lever to manipulate the sawcarrier and workit back andforth as may be required so as to press it with greater orless degree of force against the work at each stroke of the saw.

10. Aportablesawing machine,comprising a frame composed of longitudinalbars connected by crossbars at the front and rear and provided withlongitudinal center bars forming guides, a longitudinally-arranged leverpivoted upon one of the longitudinal bars at one side of the frame, uponthe under face thereof, and provided with a claw projecting beyond thefront cross-bar of the frame, and having a supplemental claw securedthereto, a claw pivoted to the opposite longitudinal bar of the frameand provided with a'supplemental claw secured thereto, a U shaped springmounted upon one of the longitudinal guides and having its free endinserted inthe pivoted claw, a chain connected between the pivoted clawand its supplemental claw and ranging beneath the front bar of themachine, a pulley mounted upon said front bar near the working end ofthe device, around which said chain passes, said chain being extendedupwardly along the said lever and secured thereto below its fulcrumpoint, whereby when the lever is moved laterally of the frame, the chainis tightened and the four claws operated to clutch a tree or log andbind the front bar of the frame against the same, a pivoted cam mountedupon the rear of the frame and adapted to be brought downwardly againstthe lever 'to bind the same in. its adjusted position, a link mounted insaid cam and adapted to engage notches formed in the lever, a handle orlever pivotally connected to said link and adapted to operate the sameto engage it in said notches and disengage it therefrom; a saw-carrierlongitudinally and freely slidable in the guides of the frame, a

shaft mounted therein and extending therethrough, a cross-head mountedupon the said shaft and provided at either end thereof with clampshaving set-screws therein, radial arms adjustably mounted in said clampsand secured by the said set-screws, a saw-blade secured to the outerface of the said radial arms, a disk secured to the shaft beneath thesawearrier and provided with a radial arm, a handle or lever secured tothe said arm and projecting from the under face of the frame beyond oneside thereof and adapted to be reciprocated by one hand of the operator,a curved arm pivoted upon the opposite face of the frame and projectinginwardly thereof, and provided with a link pivotally connected theretoand to the rear of the saw-carrier, and a handle or lever secured uponthe outer end of the said arm and projecting outwardly from the sameside of the frame as the operating-lever and adapted to be manipulatedby the other hand of the operator, whereby to press the saw against thework with the desired degree of tension at each stroke of the saw, thesaid operating-lever being longer than the saw-sliding lever, and bothlevers projecting from the opposite faces of the frame whereby the handsof the operator clear said levers and one another in the 0peration ofthe device.

11. A portable sawi [lg-machine, comprising a frame composed oflongitudinal bars conbeyond the front cross-bar of the frame, and havinga supplemental claw secured thereto, a claw pivoted to the oppositelongitudinal bar of the frame and provided with a supplemental clawsecured thereto, a U -shaped spring mounted upon one of the longitudinalguides and having its free end inserted in the pivoted claw, a chainconnected between the pivoted claw and its supplemental claw and rangingbeneath the front bar of the machine, a pulley mounted upon said frontbar near the working end of the lever, around which said chainpasses,,said chain being extended upwardly along the said lever andsecured thereto below its fulcrum -point, whereby when the lever ismovedlaterally of the frame, the chain is tightened and the fourclawsoperated to clutch a tree or log and bind the front bar of theframe against the same, a

pivoted cam mounted upon the rear of the frame and adapted to be broughtdownwardly against the lever to bind the same in its adjusted position,a link mounted in said cam and adapted to engage notches formed in thelever, a handle or lever pivotally connected to said link and adapted tooperate the same to engage it in said notches and disengage ittherefrom; a longitudinally-sliding saw-carrier mounted centrally in thesaid frame,-a segmental saw carried by the saw-carrier, and mounted upona pivot extending through the same, and operating-levers upon theopposite faces of the frame, projecting both from one side of the saidframe, the upper leverbeing connected to' the-saw-carrier and adapted toslide the same and the saw toward the work by the pressure of the handof the operator, and the lower lever having. one end connected with thepivot of the saw beneath the saw-carrier and projecting beyond the upperlever whereby it may be manipulated by one hand of the operator, whilethe upper lever is held by the other.

12. A portable sawing-machine comprising a frame provided withmanually-operated means for connecting it to a tree or log; asaw-carrier longitudinally and freelyslidable in the guides of theframe, a shaft mounted therein and extending therethrough, acrossheadmounted upon the-said shaft and provided at either end thereof withclamps having. set-screws therein, radial arms adjustably mounted insaid clamps-and secured by the said set-screws, a saw-blade secured tothe outer face of the said radial arms, a disk secured to the shaftbeneath the saw-carrier and provided with a radial arm,a handle or leversecured to the said arm and projecting from the under face of the framebeyondone side thereof and adapted to be reciprocated by one hand of theoperator,a curved arm pivoted upon the opposite face of the frame andprojecting inwardly thereof andprovided with a link pivotally connectedthereto and to the rear of the saw-carrier, and ahandle or leversecured. upon the outer end of the said arm and projecting outwardlyfrom the same side of the frame as theoperating-lever and adapted to bemanipulated by the other hand of the operator, whereby to press the sawagainst the work with thedesired degree of tension at eachstroke of thesaw, the said operating-lever being longer than the sawsliding lever,and both levers projecting from the opposite faces of the frame wherebythe hands of the operator clear said levers and one another in theoperation of the device.

In testimony thatI claim the foregoing-as my invention I have signed myname, in presence of the subscribing witnesses, this 21st day ofFebruary, 1901.

FRANK LINQUTST. \Vitnesses:

F. A. STEWART, L. R. BOYER.

